Function or Not Domain Range

Is this table a function and how can you tell?

• Yes its a function because there are not variables for missing numbers

• No it's not a function because the y value 4 repeated

• No it isn't a function because the x value 2 is repeated

• No it's not a function because the x value 5 has 2 outputs.

Tags

CCSS.8.F.A.1

Does the mapping of these points represent a function?

• Function

• Not a Function

Tags

CCSS.8.F.A.1

Is the following a function?

• Yes, this is a function.

• No, it's not a function.

• Can't be determined with this information.

Tags

CCSS.8.F.A.1

Is this table of values a function or not a function?

• Function

• Not a Function

Answer explanation

Think about a vending machine: inputs are "buttons", outputs are what the vending machine gives you - are your outputs consistent for an input/"button"?

Tags

CCSS.8.F.A.1

Select TWO correct answers.

Domain

​ (a)  

Range

​ (b)  

• The domain of the function is {0,1,2,3,4,5}

• The range of the function {0,96,192,288,384,480}

• The domain of the function is all real numbers

• The domain of the function {0,96,192,288,384,480}

• The range of the function {0,1,2,3,4,5}

• The range of the function is all real numbers.

A student borrowed $480 from a friend. He agreed to make monthly payments of $96 with no interest until the loan balance was paid off. The function shown models this situation, where f(x) represents the remaining loan balance in dollars after the student has made x monthly payments. Which statements are true about the domain and range of the function for this situation? Select the correct answers.

• D: {0, 1, 2, 3, 4, 5}

• R: {0, 96, 192, 288, 384, 480}

• D: all real numbers

• R: {0, 1, 2, 3, 4, 5}

• {0, 96, 192, 288, 384, 480}

• D: {0, 96, 192, 288, 384, 480}

• R: all real numbers

Answer explanation

Domain - x values

Range - y values

Real-world examples = apply common sense and judgements

The graph shown has a domain of​ (a)   .

It has a range of (b)   ​ (c)   (d)   . ​

• ARN

• y

• >

• G

• x

• <

• E

• B

• A

• H

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Is this graph a function or not a function? 

• Function

• Non Function

Is this mapping a function or not a function? 

• Function

• Not a Function 

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function

• Not a Function